I am based in Nashville, TN but am free to travel. For waterfall projects: I prefer to be face to face during requirements gathering, then remote with regular check-ins during the engineering phase. In a SCRUM team: daily video contact and regular deliverables.
I only bill for those hours I work. My desire is to work 40, but for short periods I can work as few as 20 hrs per week while guaranteeing you are my sole client. My weekly status reports are detailed, almost like a Twitter feed of activity.
I am not looking for side-work, this is my primary occupation and means of employment.